There is going to be a 40" narrow gauge used by the contractor who is working on ESA.
They have moved two tracks on the west side of Sunnyside (the tracks that go to the service area) so they can dig a portion of the open cut that will eventually link the ESA tunnels with the Mainline
The rock is supposed to go out via the NY&A, contractor is looking into what type of cars they can lease. Tunnel boring machine componets are just starting to be delivered